Opened a 1.7.4 world into the new snapshot. The player had the achievement "hot topic" but not "acquiring hardware". Creating an iron bar did not update the achievement chart, or listed the new achievement.
(Maps are not updated either, submitted that as a separate issue)
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.